LMX2594RHAT

Clock Generators, PLLs, Frequency Synthesizers Overview

The LMX2594RHAT is a wideband PLLatinum RF synthesizer manufactured by Texas Instruments, operating within an output frequency range of 10 MHz to 15 GHz. It integrates a voltage-controlled oscillator (VCO) and supports phase synchronization across multiple devices. The device operates on a supply voltage between 3.15 V and 3.45 V, with a typical working current of 340 mA at 3.3 V. It features a high phase detector frequency of up to 400 MHz in integer mode and 300 MHz in fractional mode. The component utilizes a 40-pin VQFN package and functions reliably within a temperature range of -40°C to +85°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates a VCO without internal multipliers to eliminate the need for harmonic filters
• Enables phase synchronization across multiple devices for MIMO and beamforming applications
• Supports JESD204B standard SYSREF generation or repetition for high-speed data converters
• Includes a frequency ramp generator capable of synthesizing up to two ramp segments

Clock Generators, PLLs, Frequency Synthesizers Applications

• MIMO and beamforming systems requiring synchronized PLL outputs
• Low-noise clock sources for high-speed data converters
• Applications requiring deterministic delay between input and output signals

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix RHAT corresponds to the tape and reel packaging configuration when ordering. Confirm that the 40-VQFN footprint matches the target PCB layout. Ensure the supply voltage requirements align with the system's power delivery network specifications before finalizing procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when an output frequency up to 15 GHz is required without internal multiplication. Consider the integrated VCO and lack of subharmonic filter needs as key differentiators. Evaluate the phase synchronization capabilities if designing multi-channel systems. Verify compatibility with JESD204B standards if used with ADCs or DACs.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The LMX2594RHAT belongs to the LMX2594 series of wideband PLLatinum RF synthesizers from Texas Instruments. It shares core specifications with variants such as the LMX2594RHAR, differing primarily in packaging or reel configurations. This series is designed for high-performance wireless infrastructure and test equipment applications.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The LMX2595 is discussed as a potential alternative in technical forums. However, the LMX2595 includes an internal multiplier, which may not be suitable for designs requiring direct VCO operation without multiplication. Verify functional equivalence carefully.